Dual flush control



Aug. 30, 196 F. P. RICHARDS mum. FLUSH con-mm.

2 Sheets-Sheet 1 Filed Dec. 4, 1957 Fig. 2

Aug. 30, 1960 F. P. RICHARDS DUAL FLUSH CONTROL 2 Sheets-Sheet 2 FiledDec. 4, 1957 Tr m 0 C Ni. R P d m F ATTORNEY DUAL FLUSH CONTROL Fred P.Richards, 2835 W. 24th Ave., Denver 11, C010.

Filed Dec. 4, 1957, Ser. No. 700,684

6 Claims. (Cl. 4-67) This invention relates to the flush tanks or waterchests conventionally utilized in association with and for the selectiveflushing of toilets, and has as an object to provide control meansselectively actuable to deliver for flushing purposes either the fullcharge of the flush tank, or, alternatively, a predetermined portion ofthe said charge, whereby to conserve the amounts of water utilized forsuch purposes.

A further object of the invention is to provide auxiliary means adaptedfor convenient operative association with the conventional flushingcontrols of toilet tanks and water chests to condition said conventionalcontrols for selective actuation to deliver either all or apredetermined portion of the tank charge.

A further object of the invention is to provide an auxiliary controladapted for convenient operative association with the conventionalcontrols of flush tanks and water chests to condition the latter foralternative actuation to release for flushing purposes either all of thetank charge, a predetermined portion of said charge, or the entirecharge in a two-stage sequence resulting from successive controlmanipulations.

A further object of the invention is to provide an auxiliary dualcontrol attachment for operative association with the conventionalflushing controls of flush tanks and water chests which is susceptibleof ready installation in position of use without significant alterationof the conventional equipment through the application of ordinary skilland the use of customarily-available tools.

A further object of the invention is to provide an auxiliary dualcontrol attachment for operative association with the usual controls offiush tanks and water chests that is susceptible of convenientadjustment to vary and determine the proportion of the water chargefractions releasable through actuation thereof.

A further object of the invention is to provide a novel and improveddual control auxiliary attachment for operative association withconventional flushing controls of flush tanks and water chests that issimple and economical of production, facile of installation andadjustment, positive and efiicient in operation, and durable in use.

A further object of the invention is to provide a novel and improvedconstruction and operative correlation of elements constituting a dualcontrol auxiliary attachment for operative association in supplementingrelation with conventional flushing controls of flush tanks and waterchests.

With the foregoing and other objects in view, my invention consists inthe construction, arrangement, and operative combination of elements ashereinafter set forth, pointed out in my claims, and illustrated by theaccompanying drawings, in which- Figure 1 is a perspective view of atypical conventional flush tank as adapted with the attachment of theinstant invention in operative correlation with the conventionalflushing controls of the tank, ready for use; a portion of the tank wallbeing broken away to illustrate otherwise concealed construction.

nited States Patent "ice 2,950,483 Patented Aug. 30, 1960 Figure 2 is aside elevation, on a relatively enlarged scale, of the control assemblyillustrated by Figure 1 as positioned with the full charge of water inthe tank prior to a flushing operation; structure not essential to anunderstanding of the invention being omitted and certain conventionalelements of the organization being shown in section.

Figure 3 is a fragmentary, detail elevation of the organizationaccording to Figure 2 as viewed substantially from the zone representedby the indicated line 33 of said latter view.

Figure 4 is a top plan View, partially in section, of the organizationaccording to Figure 2 as viewed from the zone indicated by the line 4-4of said latter view.

Figure 5 is a view similar to Figure 2 representing on a relativelyreduced scale a relation of the control elements automatically resultingfrom an initial actuation thereof directed to partial delivery of thetank charge.

Figure 6 is a view similar to Figure 5 illustrating the disposition ofthe control elements upon completion of the flushing operation initiatedas represented in the preceding view.

Figure 7 is a view similar to Figures 5 and 6 representing the controlelements as positioned for full delivery of the tank charge.

Figure 8 is a fragmentary, detail, top plan View of a manipulatorappropriate for selective actuation of the improvement of the inventionas installed in substitution for a conventional such facility.

Figure 9 is a fragmentary, detail elevation showing the inner faceaspect of the manipulator according to Figure 8.

Figure 10 is a fragmentary, detail section taken substantially on theindicated line 1010 of Figure 9.

The increasing importance of water conservation directs attention to thewaste of water commonly characterizing conventional flushing of toilets.The water charge of the usual fiush tank or water chest is normallyadequate to accomplish a complete and thorough flushing of theassociated toilet under the most adverse conditions and is hence much inexcess of that required under most favorable conditions. Theconventional controls supplied for selective flushing of the toilet arearranged to deliver the entire tank or chest charge at each actuationand are not expedient of adjustment to permit selective delivery of theentire tank or chest charge, at need, and alternative delivery of a lessadequate charge at other occasions. Facilities for effecting eithercomplete or partial delivery of the conventional tank or chest chargehave been hitherto designed, but such facilities have been somewhat lessthan satisfactory for various reasons, have in the main been unsuitedfor convenient attachment to and use with the conventional controls ofinstallations widely in use, and have been frequently less thanconvenient of selective operation, hence the instant invention has.

been devised to provide a selectively-actuable dual control of low costthat is convenient of operative association with conventionalinstallations of diverse particularity of function for release forflushing purposes of a predetermined portion, or all, of a tank or chestwater charge with elimination of the shortcomings and disadvantages ofthe analogous expedients hitherto known.

In an extensive variation of structural particularity, flush tanks andwater chests adapted to the flushing of toilets are alike characterizedby a tank chamber 15 adapted to receive and confine an appropriatecharge of water elevated by means of the horizontal floor 16 above thebowl of an associated toilet. Water is supplied to the interior of thechamber 15 through a line 17 leading from any suitable water source orsupply and arranged to discharge within the chamber 15 through a valve,not shown, under the control of a float 18 disposed to rise water chargetherein.

, water charge.

a 3 and fall interiorly of the chamber 15 with the level of the Thus,water inflows to the chamber 15 through the line 17 and fills the saidchamber with corresponding elevation of the float 18 until apredetermined maximum water charge is received within'the chamber 15 andthe fioatis elevated to close the valve controlling flow through theline 17; lowering of the 7 seat 20, or otherwise, with the line 19 andstands vertically within the chamber 15 at one side of the seat 20 todi'spose its open upper end at the plane of maximum water chargeappropriate for the tank or chest installation, so that, even when theseat 20 is closed against flushing use flow therethrough as hereinafterset forth, elevation of the water charge above the upper end of theoverflow line 21 is relieved through said line, the seat 20, and theline 19 to establish and maintain a maximum water charge levelcoincident with the upper end of the overflow line 21.

A buoyant valve plug 22, usually of resilient material, adapted for.sealing coaction with the seat 20 under pressure thereupon imposed bythe water charge of the chamber 15 is adjustably connected to one end ofa coaxial stem 23 disposed to upstand vertically within the chamber insubstantial registration with the center of the seat 20 slidably.through a guide sleeve 24 adjustably supported upon and atone side ofthe overflow line 21, as by means of a clamp bracket 25, Well above theseat 20 in coaxial registration therewith. The end portion of the stem23 above the sleeve 24 operatively connects through the slip loop 26 ofa link 27 with the free end of a trip lever 28 extending substantiallyhorizontally within the upper portion of the chamber 15 from amanipulating handle 29 journaled through and available exteriorly of thefront Wall of said chamber selectively actuable to oscillate the freeend of said lever through a limited vertical arc.

Organized as shown and described, the conventional features and elementsof the assembly function in reaction to manipulation of the handle 29 todeliver the full tank charge through the seat 29 and line 19 to and withflushing effect upon the associated toilet bowl, and to thereafterautomatically recharge the tank for repetition of the flushingoperation. With the conventional elements suitably proportioned andinterconnected and the chamber 15 charged with water to the approximatelevel of the upper intake end of the overflow line 21, said 7 elementsare disposed and correlated as typified by Figure 2 with the valve plug22 held to scaling coaction with the seat 20 by pressure of the waterthereabove, the float 18 elevated by the water charge to interruptinflow to the chamber through the supply line 17, and with the free endof the trip lever 28 at the lower limit of its range of oscillation torelieve the link 27 from any tensioning coaction with the stem 23, allin a maintained disposition and correlation appropriate to accomplish aflushing operation. Delivery of the water charge from the chamber 15through the seat 20 and line 19 ensues upon actuation of the handle 29to elevate the free end of the trip lever 28 sufliciently for upwarddisplacement of the stem 23 through its guide sleeve 24 by means of thelink 27 and consequent elevation of the valve plug 22 away from the seat20, in which operation the buoyancy of the plug and the travel of thefree end of the lever 28 cooperate to lift the plug'well above the seatand out of the influence of the water flow to and through said seat tosubstantially the position shown by Figure 7 where the plug is held,usually against the lower end of the a 4 sleeve 24, by its buoyancyafter return of the trip lever 28 and associated link 27 to the lowerlimits of their travel range. With the plug 22 uuseated from and raisedwell above the seat 20 as shown and described, outflow of water from thechamber 15 continues through said seat and the line 19 untillowering ofthe water charge level within the chamber permits the buoyant plug 22 todescend therewith for ultimate rescaling coaction with the seat 20, nowassisted by the influence of the water outflow, and consequentinterruption of discharge from the chamber. The float 18 lowers with thelevel of the water charge outflowing from the chamber 15 to consequentlyopen the valve controlling inflow through the line 17 as the plug 22returns to its seat 20 subject to the influence of the outflowthereabout, whereby to promptly reestablish a water charge pressureacting upon the plug in supplementing relation to the suction eflt'ectderiving from interruption of the outflow to securely hold said plug toits seat while the chamber refills with elevation of the float 18 andreturn of the control elements to their initial relation offlushingpotential.

All of the foregoing is but representative of conventional flush tankand flush control organizations similarly as illustrated and hereinafterdescribed.

Adapted to function as a brake automatically and frictionally coactablewith the stem 23 to retain the valve 'plug 22 elevated'away from itsseat 20 subject to and within the influence of the outflow through saidseat under certain predetermined, initial conditions and to release saidstern for. return of. the plug to its seat in reaction to the outflowinfluence upon attainment of subsequent, predetermined conditions, asupplementary, unitary assembly is provided for convenient attachment tothe overflow line 21 in position of practical use. In an embodimentsusceptible of wide structural variation, the supplementary, unitaryassembly is illustrated as comprising a clip 31 adapted to exteriorlyembrace and adjustably clamp in fixed relation to the overflow line 21at a zone of the latter spacedly adjacent and above the clamp bracket 25and a spaced pair of like arms 31 hinged at their corresponding ends tothe clip 30 to extend outwardly thence parallel to and on the oppositesides of a line joining the axes of said overflow line and the stem 23.The arms 31 are of such length as'to span from their connection with theclip 30 to embrace the stem 23 between their free ends, are spaced aparta substantial distance to spacedly overlie opposite sides of said stem,and are adapted tobe adjustably immobilized with respect to theassociated clip, as by means of a clamp bolt 32, preferably in aninclined disposition such as to locate their free ends adjacent and justabove the guide sleeve 24. The free end portions of the arms 31 arecorrespondingly apertured to receive and rotatably mount an intermediateportion 33 of an elongated rod of uniform diameter thereby supportedwith its axis perpendicular to that'of the stem. 23 out of engagementwith and in a slight spacing toward the overflow line 21 away from saidstem. The rod portion 33 is straight in a length such as to extend ateach end well beyond the associated arms 31, and at one end of saidportion the rod material is curved through anarc of one hundred andeighty degrees to establish a second straight rod portion 34 spacedlyparallel to, in the same plane as, and overlying the portion 33 at suchdistance from the latter as to span over and in clearing relation acrossthe ends of the arms 31 interportion 34 is terminated at or justoutwardly beyond the arm 31 remote from the conjunction of the rodportions 33 and 34 by an abrupt, preferably ninety degree, bend in therod material efiective to establish the one terminal rod portion 35 as astraight extension substantially perpendicular to the plane common tothe portions 33 and 34 and in a direction outwardly past the stem 23 andaway from the overflow line 21, upon which portion 35 a counterpoise 36is mounted at a spacing, preferably adjustable, from the rod portionssand 34. The end of the straight rod portion 33 remote from itsconjunction with the portion 34 is established by an abrupt bend, on theorder of ninety degrees, in the rod material productive of a straightrod portion 37 directed generally parallel to and in a directionopposite to that of the portion 35 partially across and in clearingrelation outwardly beyond the overflow line 21 and associated elements,and from an outer end of said portion 37 substantially and spacedlyoverlying the overflow line 21 the other terminal portion of the rodmaterial extends as a straight length 38 angularly related to theportion 37 to incline upwardly and outwardly of the assembly in a lengthequalling or surpassing the height of the said line 21. The terminallength 38 of the rod material slidably mounts a buoyant member 39 forfree reciprocation therealong', and a stop 49 is adjustably associatedwith said length 3-8 between the rod portion 37 and the member 39 tolimit and determine travel of said member on said length in onedirection.

Organized and installed as shown and described and with the weight andeffective leverage of the member 39 proportioned to overcome thecounter-action of the counterpoise 36, the assembly of the attachment isadjusted to give effect to the principles of the invention through suchangular shift and subsequent immobilization of the arms 31 as will serveto position the rod portion 33 closely and spacedly adjacent, but out ofcontact with, the stem 23 and a fixing of the stop 40 to the rod length38 at a point therealong appropirate to determine inward shift of themember 39 thereon in accordance with considerations hereinafterelaborated. As so mounted and adjusted, and with no water charge in thechamber 15 elfective to elevate the member 39,- the weight and leverageof the latter acts to overcome the effect of the counterpoise 36 and torock the several rod portions and associated elements in the free endsof the arms 31 and about the axis of the rod portion 33 to the positionshown in Figure 7 wherein the rod portion 34 is retraced away fromcontact with the stem 23 to rest against upper margins of the arms 31 asa stop limiting angular displacement of the rod unit in one direction,thus freeing the stem 23 and its adjuncts for operation in theconventional manner above described. As a water charge accumulateswithin the chamber 15, the rising level thereof first sustains and liftsthe buoyant member 39 with reduction of its effective weight to suchdegree as permits the counterpoise 36 to rock the rod unit to theposition shown in Figure 6, wherein the rod portion 34 is shifted fromengagement with the upper margins of the arms 31 but remains out ofcontact with the stem 23, and further rise of the water level as thecharge approaches a maximum acts to shift the member 39 upwardly on thelength 33 and away from the stop 46 with consequent further rocking ofthe rod unit to the positions represented by Figures 2 and 5, whereinthe now unbalanced weight of the counterpoise acts to engage the rodportion 34 against the adjacent side of the stem 23 with a forcefrictionally resistive of stem displacement longitudinally in eitherdirection. Thus, the attachment of the instant invention in no waymodifies or interferes with the conventional procedures incident toautomatic recharge of the chamber 15 subsequent to a flushing operationand reacts to such procedures only to apply the rod portion 34 inengagement against and with frictional braking eflect upon the stem v23.

With the attachment in place as shown and described, there is noalteration of or interference with the conventional operations incidentto the usual delivery of the chamber charge for a full, or maximum,flushing eflect other than the frictional resistance to elevation of thestem 23 imposed by the rod portion 34 which yields readily tooscillation of the trip lever 28. Customary actuation of the trip lever28 by means of the handle 29, as above set forth, acts in a usual'mannerto elevate the stem 23 against the friction imposed by the rod portion34 and to lift the valve plug 22 away from its seat and out of theinfluence of the consequent water outflow to the position represented byFigure 7, where said plug is retained as above explained, and furthersecured by the pressure of the rod portion 34 against the stem 23, asthe chamber charge drains through the so-opened seat 20. As the watercharge level subsides during the full flushing discharge, the member 39lowers therewith and first slides downwardly along the rod length 38 toengagement against the stop 49 and thereafter swings on and with saidlength 33 to rock the rod unit for the shift of the rod portion 34 awayfrom the stem 23 and to engagement with the upper margins of the arms31, as in Figure 7, whereby to release said stem for return of the valveplug 22 to coaction with the seat 20 precisely as though the attachmentwere not present.

Operatively conditioning the attachment for realization of its intendedpurposes, provision is made for selective, two-stage actuation of thetrip lever 28 with consequent differential elevation of the stem' 23 andits associated valve plug 22, whereby to accommodate elevation of saidplug out of the influence of the outflow through the open seat 2% asabove explained, and, alternatively, to establish a lesser elevation ofsaid plug suflicient to adequately open the seat 20 while retaining theplug within the influence of the outflow therethrough, and a practicalarrangement for such purpose is represented by Figures 8, 9 and 10. Asshown, a sleeve 41 conventionally fixed through the usual appropriateopening in the front wall of the chamber 15 is adapted to rotatably andslidably mount the customary perpendicularly-related terminal portion23' of the trip lever 28, or the equivalent thereof, entered coaxiallytherein to fixed engagement with an actuating handle 29' therebydisposed exteriorly of the chamber 15 in position for selectivemanipulation eflective to oscillate the free end of said lever in bothdirections through a vertical are within the limits determined by a stoplug 42 fixedly outstanding from the sleeve 41 for coaction with acomplementary stop, not shown, fixed Within and movable with the hub ofthe handle 29', as is ordinary practice in the analogous art. Anexpansive coil spring 43 is pocketed within the sleeve 41 about thelever portion 28' in bearing engagement between an end of said sleeveand the hub of the handle 29' to yieldably urge the handle away from thechamber Wall, and a stud 44 fixedly projects radially from said leverportion 28 adjacent and in position to bear against the inner end of thesleeve 41 as a stop limiting axial displacement of the lever portion 28in opposition to the pressure of the spring 43. Selective, two stageactuation of the trip lever 28 by means of the handle 29 as organizedaccording to Figures 8, 9 and 10 is made feasible through the provisionof a shallow notch 45 radially intersecting and opening axially from theend of the sleeve 41 remote from the handle 29' in an angular extentsomewhat exceeding the corresponding dimension of the stud 44, withinwhich notch said stud is constrained to enter by the pressure of thespring 43, and said stud and notch are so correlated, angularly, as toenter the stud in and adjacent an end shoulder of the notch with theexcess angular extent of the notch leading the stud in the direction ofstud rotation incident to flushing actuation of the trip lever 28 whensaid lever is in the inoperative, lowered disposition represented byFigures 1, 2, and the full line showing of Figure 9;

The angular extent of me notch 45 is such as to accommodate therein anangular play of the stud 44 adequate to reflect elevation of the'freeend of the'lever 28 sufficiently to lift the valve plug 22 from its seatand into full opening relation therewith while yet subject to thereseating influence of the outflow'thereabout,

. whichlift of the valve plug, as represented by Figure 5,

is considerably less than the conventional lift charactciistic of a fullflushing operation. The angular play of the stud 44 accommodated by thenotch 45 is a lesser portion of that possible for the handle 29 andaccounts for but an initial'arc of handle manipulation, so that, uponinward shift of said handle against the spring 43 and consequent releaseof the stud 44 from its notch '45, the full range of handle manipulationis available to effect the conventional actuation of the trip lever 28incident to a complete flushing delivery of the chamber charge; a slightbeveling of the notch end shoulder leading in the direction of studdisplacement, as at 46, Figure 8, facilitating such release of the studfrom its notch."

With the unit attachment of the invention operatively in place ashereinabove described, the handle organization according to Figures 8, 9and 10, or the substantial equivalent, conditions the attachment toselectively effect a partial, a complete, or a progressively partial andcomplete discharge of the chamber charge. A full range actuation of thehandle 29' under inward pressure adequateto release the stud 44 from thenotch 45 oscillates the trip lever to effect a full lift of the valveplug 22 for consequent delivery of the entire chamber charge withmaximum flushing effect in accordance with the usual cyclecharacterizing the conventional controls, as hereinabove detailed. Whena flushing operation conservative of chamber charge is desired, thehandle 29' is actuated to but that extent permitted byplay of the stud44 in its notch 45 and the valve plug 22 is consequently elevated toopen outflow from its seat 20 a distance insutficient to remove saidplug from the reseating influence of the outflow thereabout, as inFigure 5, in which disposition the said plug is retained by the frictionof the rod portion 34 on the stem 23 while outflow progresses. As thewater charge level subsides with the valve plug but partially elevated,consequent lowering of the member 39 acts at a predetermined stage,variably established by the adjustments and correlations inherent in theunitary attachment organization, to rock the rod unit for release of therodrportion 34 from the stem 23 and consequent freeing of said stemwhich permits reseating of the valve plug, as in Figure 6, in reactionto the outflow influence to which it is subject; such reseating of thevalve plug arresting discharge of the chamber contents and initiatingrecharge of the chambar, as is fully obvious. Manifestly, a partialflushing accomplished as just set forth may be extended to completion ofa full flushing operation through an immediately subsequent furthermanipulation of the handle 29' through the range of actuation availablewhen the stud 44 is released from its notch, as 'hereinabove explained,there being no impediment whatever to conventional actuation of theprincipal controls when partial release of the water charge hasoccasioned release of the rod portion 34 from the stem 23.

Since changes, variations, and modifications in the form, construction,and arrangement of the elements shown and described may be had withoutdeparting from the spirit of my invention, I wish to be understood asbeing limited solely by the scope of the appended claims,

rather than by any details of the illustrative showing and foregoingdescription.

I claim as my invention:

1. The combination with a flush tank adapted to confine a charge ofwater, a gravity outlet from said tank,

' a stem guided for vertical, longitudinal reciprocation withinsa-idtank, a buoyant valve plug shiftable with said stem into and away fromcoaction with said outlet, and means selectively actuable toshift saidstem for eleva tion of said plugaway from its seat, of a unitaryassembly rockablejabout a horizontal rod portion journaled spacedlyadjacent said stem, a rod continuation spacedly parallel to saidjournaled portion rockable with said assembly between frictionalengagement against said stem andfixed stop means remote from the stem,oppositelydisposed arm portions respectively fixed to and carried bysaid journaled rod portion and the spacedly-parallel continuationthereof in and substantially perpendicular to the rod portion rockablymounting said assembly, a counterpoise on that 'onerof said arm portionscarried by the rod continuation at the side of the stem remote from therock-able mounting of the assembly adapted to urge said rod continuationagainst the stem, and a buoyant member on the otherarm portion opposingand effective at times to overcome the action of said counterpoise,wherein said buoyant member is slidably mounted for shift longitudinallyalong its asso ciated arm portion and an adjustable stop on the latterlimits shift "of said member inwardly of the arm portion toward therockable mounting of the assembly;

2. The combination with a flush tank adapted to con fine a chargeof'water, a gravity outlet from said tank, a stem guided for vertical,longitudinal reciprocation within said tank, a buoyant valve plugshiftable with said stem into and away from coaction with said outlet,and means selectively actuable to shift said stem for elevation of saidplug away from its seat, of a unitary assembly rockable about ahorizontal rod portion journaled pacedly adjacent said stem, a 'rodcontinuation spacedly parallel to said joumaled portion rockable withsaid assembly between frictional engagement against said stem and fixedstop means remote from the stem, oppositely-disposed arm portionsrespectively fixed to and carried by said journaled rod portion and thespacedlyparallel continuation thereof in and substantially perpendicularto the rod portion rockably mounting said assembly, a counterpoise onthat one of said arm portions carried by the rod continuation at theside of the stem remote from the rockable mounting of the assemblyadapted to urge said rod continuation against the stem, and a buoyantmember on the other arm portion opposing and effective at times toovercome the action of said counterpoise, wherein the arm portionsupporting the counterpoise is generally horizontal, the arm portionsupporting the buoyant member inclines divergently from said stem andupwardly of the tank, said buoyant mem her is slidably mounted for shiftlongitudinally along such inclined arm portion, and a stop on the latteradjustably limits shift of said member inwardly of the associated armportion, whereby adjustment of said stop is efiective to determine thewater level stage at which said member reacts to overcome the influenceof the counterpoise.

3. The combination with a flush tank adapted to confine a charge ofwater, a gravity outlet from said tank, a stem guided for vertical,longitudinal reciprocation Within said tank, a buoyant valve plugshiftable with said stem into and away from coaction with said outlet,and means selectively actuable to shift said stem foil elevation of saidplug away from its seat, of a unitary assembly rockable about ahorizontal rod portion journaled spacedly adjacent said stem, a rodcontinuation spacedly parallel'to said journaled portion rockable withsaid assembly between frictional engagement against said stem and fixedstop means remote from the stem, op-

adapted to urge said rod continuation against the stem, and a buoyantmember on the other arm portion opposing and effective at times toovercome the action of said counterpoise, wherein said rockable assemblyis constituted as a single length of rod material of uniform diameterconformed to provide an intermediate portion adapted for journaledmounting in horizontal disposition spacedly adjacent the stem, a secondstraight continuation portion spacedly paralleling said intermediateportion and rockable therewith into engagement with and away from thestern, a terminal portion substantially perpendicular to and at one endof said continuation portion adapted for generally horizontaldisposition in supporting relation with the counterpoise, a secondterminal portion at one end of and in a plane substantiallyperpendicular to said intermediate portion directed oppositely to saidfirst terminal portion and diverging from said stern upwardly of thetank in slidable supporting relation with the buoyant member, and a stopadjustably engaged with the second terminal portion determinative ofmember travel inwardly thereon.

4. The combination with a flush tank adapted to confine a charge ofwater, a gravity outlet from said tank, a stem guided for vertical,longitudinal reciprocation within said tank, and a buoyant valve plugshiftable with said stem into and away from coaction with said outlet,of means selectively actuable through unidirectional arcs of difierentamplitudes to elevate said plug away from said outlet to a positionWithin the influence of the consequent outflow therethrough, and,alternatively, to elevate the plug away from the outlet to a positionremote from such influence, and means automatically reactive to levelvariations of the tank water charge to frictionally engage said stem andso retain the plug in either of its elevated dispositions when the watercharge exceeds a predetermined intermediate level and to release saidstem at said latter level, wherein the means selectively actuable toelevate the plug comprises a trip lever mounted for oscillation througha vertical arc interiorly of the tank on a perpendicularly-relatedterminal portion slidably and rotatably supported through a wall of thetank, a link operatively intercoupling said stem and the free end ofsaid lever, an actuating handle fixed to the end of said lever terminalportion exteriorly of the tank, a spring yieldably urging said handleaway from the tank, a stud on the lever terminal portion coacting withthe associated support to oppose the action of said spring, and a radialnotch in said support complementary to said stud determinative of therange of stud oscillation when said handle is at the limit of itsseparation from the tank.

5. A supplementary dual flush control attachment for flush tanks adaptedto confine a charge of water having in conventional construction andassociation a gravity outlet, a stem guided for vertical, longitudinalreciprocation therein, a buoyant valve plug shiftable with said steminto and away from coaction with said outlet, a trip lever selectivelyactuable to elevate said stem and plug, and an overflow line spacedlyparalleling said stem interiorly of the tank, comprising a mountingadapted to operatively iii support said trip lever on a tank wall foralternative, two-stage actuation through unidirectional arcs ofdifferent amplitudes, and a unit assembly adjustably mountable upon saidoverflow line automatically reactive to level variations of the tankwater charge to frictionally engage said stem when the water chargeexceeds a predetermined intermediate level and to release said stem atsaid level, wherein the mounting for the trip lever includes a fittingmountable through the tank wall adapted for slidable and rotatablecoaction with a perpendicularly-related terminal portion of theconventional trip lever engageable therethrough, an actuating handlefixable to the end of said terminal portion exteriorly of the tank, aspring within said fitting operable to yieldably urge said handle to thelimit of its separation from the tank, and means on the end of saidfitting opposed to the trip lever coactable with and to limit angulardisplacement of the latter when said handle is at its maximum separationfrom the tank.

6. A supplementary dual flush control attachment for flush tanks adaptedto confine a charge of water having in conventional construction andassociation a gravity outlet, a stem guided for vertical, longitudinalreciprocation therein, a buoyant valve plug shiftable with said v steminto and away from coaction with said outlet, a trip lever selectivelyactuable to elevate said stem and plug, and an overflow line spacedlyparalleling said stem interiorly of the tank, comprising a mountingadapted to operatively support said trip lever on a tank wall foralternative, two-stage actuation through unidirectional arcs ofdifierent amplitudes, and a unit assembly adjustably mountable upon saidoverflow line automatically reactive to level variations of the tankWater charge to frictionally'engage said stem when the water chargeexceeds a predetermined intermediate level and to release said stem atsaid level, wherein said unit assembly consists of a clip adapted toadjustably embrace the overflow line, spaced, parallel arms adjustablycarried by said clip adapted to span between said overflow line and saidstem, an element journaled through the free ends of said arms forrotation about a horizontal axis thereby positionable spacedly adjacentsaid stem, a second element offset from said first element and rockabletherewith between a position efiective for frictional engagement withthe stem and stop engagement with upper margins of said arms,gravity-responsive means urging said second element into the position ofpotential engagement with the stem, and buoyant means adapted forreaction to level variations of the tank charge opposing and effectiveat times to overcome the influence of said gravity-responsive means.

References Cited in the file of this patent UNITED STATES PATENTS2,001,390 Lester May 14, 1935 2,686,921 Ezzell Aug. 24, 1954 2,690,567Quebbeman Oct. 5, 1954

